The showrunner gave hints about how the impending motherhood of Sofia Vergara's character will affect her husband Jay (Ed O'Neill), as well as their respective children Manny (Rico Rodriguez) and Claire (Julie Bowen).
"Gloria's pregnancy has repercussions throughout the family," Lloyd told TV Guide. "Jay is unnerved about being a dad again and briefly sees a therapist.
"Gloria is in a bit of denial and refuses to stop wearing her usual clothes; and Manny is concerned the parenting duties will fall to him.
"Phil (Ty Burrell) is transfixed by the changes to Gloria's physique. And so is Claire, who secretly delights in it."
Rodriguez previously admitted that his "jaw dropped" when he heard of Modern Family's pregnancy twist.
The show will return to ABC on September 26.